Lashbond Building Serum is a highly concentrated, clinically tested eyelash serum featuring Olaplex Peptide Complex Technology for longer, thicker, stronger, and healthier lashes in just 4 weeks. The natural lashes of your dreams are only a few weeks away. Discover the power of hair science. Just one stroke of Lashbond Building Serum in the morning and evening provides a powerful, lash-enhancing trio that supports the natural growth cycle and combats lash loss. Experience more well-groomed and healthier-looking lashes in just 2 weeks, and longer, thicker-looking lashes in 4 weeks. Lashbond is ophthalmologist-tested and compatible with contact lenses, lash lifts, lash extensions, and false lashes. Results may vary. Based on a clinical consumer perception study with 33 participants after 4 weeks of use.